<DOCUMENT>
<TYPE>13F-HR
<SEQUENCE>1
<FILENAME>form13f.txt
<DESCRIPTION>NIERENBERG INVESTMENT MANAGEMENT COMPANY 13F-HR 9-30-2009
<TEXT>
                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    Form 13F
                               Form 13F COVER PAGE
Report for the Calendar Year or Quarter Ended: 9/30/2009
Check here if Amendment []; Amendment Number:
                                               -------
This Amendment (Check only one.):               [] is a restatement.
                                                [] adds new holdings entries.

Institutional Investment Manager Filing this Report:


Name:      Nierenberg Investment Management Company, Inc.

Address:   19605 NE 8th Street Camas, WA 98607


Form 13F File Number: 028-10859


The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Persons Signing this Report on Behalf of Reporting Manager:

Name:   David Nierenberg
Title:  President
Phone:  360-604-8600

Signature,  Place,  and  Date  of  Signing:

/s/ DAVID NIERENBERG               Camas, WA                          11/16/2009
---------------------------------  ---------------------------------  ----------
[Signature]                        [City, State]                      [Date]


Report  Type  (Check  only  one):

[X]     13F HOLDINGS REPORT. (Check here if all holdings of this reporting
        manager are reported in this report.)

[ ]     13F NOTICE. (Check here if no holdings reported are in this report,
        and all holdings are reported by other reporting manager(s).)

[ ]     13F COMBINATION REPORT. (Check here if a portion of the holdings for
        this reporting manager are reported in this report and a portion are
        reported by other reporting manager(s).)

List of Other Managers Reporting for this Manager:


<PAGE>
                              Form 13F SUMMARY PAGE

Report Summary:

Number of Other Included Managers:                    1

Form 13F Information Table Entry Total:              10

Form 13F Information Table Value Total:  $   393,460.00
                                         --------------
                                         (In Thousands)


List of Other Included Managers:

Provide a numbered list of the name(s) and 13F file number(s) of all
institutional investment managers with respect to which this report is filed,
other than the manager filing this report.

No.   Form 13F File Number  Name

1                           Nierenberg Investment Management Offshore, Inc.
----  --------------------  ----------------------------------------------------


<PAGE>
<TABLE>
<CAPTION>
                                                  FORM 13F INFORMATION TABLE

        COLUMN 1             COLUMN 2      COLUMN 3  COLUMN 4      COLUMN 5        COLUMN 6  COLUMN 7         COLUMN 8
------------------------ ----------------- --------- -------- ------------------- ---------- -------- -------------------------
                                                      VALUE    SHRS OR   SH/ PUT/ INVESTMENT  OTHER       VOTING AUTHORITY
     NAME OF ISSUER       TITLE OF CLASS     CUSIP   (x$1000)  PRN AMT   PRN CALL DISCRETION MANAGERS    SOLE     SHARED   NONE
------------------------ ----------------- --------- -------- ---------- --- ---- ---------- -------- ---------- --------- ----
<S>                      <C>               <C>       <C>      <C>        <C> <C>  <C>        <C>      <C>        <C>       <C>
ASSET ACCEP CAP CORP     Common            04543P100   35,750  4,931,049 SH       DEFINED    1         4,083,208   847,841    0
BROOKS AUTOMATION INC    Common            114340102   35,640  4,610,670 SH       DEFINED    1         3,893,720   716,950    0
ELECTRO SCIENTIFIC INDS  Common            285229100   50,969  3,806,484 SH       DEFINED    1         3,216,390   590,094    0
HEARTLAND PMT SYS INC    Common            42235N108   27,516  1,896,337 SH       DEFINED    1         1,574,185   322,152    0
MEDCATH CORP             Common            58404W109   25,790  2,940,711 SH       DEFINED    1         2,443,045   497,666    0
MEXICAN RESTAURANTS INC  Common            59283R104    2,875  1,192,956 SH       DEFINED    1           922,965   269,991    0
MOVE INC COM             Common            62458M108   76,019 28,155,339 SH       DEFINED    1        23,650,193 4,505,146    0
NATUS MEDICAL INC DEL    Common            639050103   55,580  3,602,044 SH       DEFINED    1         3,020,217   581,827    0
RADISYS CORP             Common            750459109   39,344  4,527,463 SH       DEFINED    1         3,726,287   801,176    0
SUPERIOR ENERGY SVCS INC Common            868157108   43,977  1,952,809 SH       DEFINED    1         1,661,075   291,734    0
</TABLE>


(1) Nierenberg Investment Management Company, Inc. shares investment discretion
with Nierenberg Investment Management Offshore, Inc. only with respect to those
shares with which it shares voting authority, as set forth in Column 8
</TEXT>
</DOCUMENT>